solar system

4. Any of innumerable small bodies of accreted gas and dust thought to have orbited the Sun during the formation of the planets.
5. consists mainly of small bodies or remnants from when the Solar System formed.
6. is a unit of length, roughly the distance from Earth to the Sun and approximately equal to 150 million kilometers or 8.3 light-minutes.
8. composed mainly of hydrogen and helium.
10. they have a a compact, rocky surfacess like Earth's terra firma
12. a solid piece of debris from an object,
14. long cliffs on Mercury's surface. Create after lava on mercury cooled and after it cooled
15. a small body of matter from outer space that enters the earth's atmosphere,
16. actual or apparent motions of a body in direction opposite to that
18. lumps of rock or iron that orbit the sun,

1. a fundamental system in condensed matter sciences and the main constituent of gas giant planets.
2. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
3. a number of meteors that appear to radiate from one point in the sky at a particular date each year
7. region of space between the orbits of Mars and Jupiter where most of the asteroids in our Solar System are found orbiting the Sun.
9. the locus of all points such that the sum of the distances from two foci to any point on the ellipse is a constant
11. the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.
13. a measure of how non-circular the orbit of a body
17. What is Ceres